A060848 - OEIS

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A060848

Difference between a nontrivial prime power (A025475) and the next prime.

1, 3, 2, 1, 4, 2, 5, 4, 3, 2, 6, 2, 3, 4, 8, 1, 4, 4, 6, 9, 12, 6, 4, 12, 6, 7, 30, 4, 12, 12, 5, 16, 6, 4, 10, 10, 12, 10, 6, 3, 4, 6, 10, 4, 6, 2, 4, 10, 6, 17, 4, 10, 4, 18, 6, 30, 12, 12, 4, 10, 27, 4, 6, 4, 12, 4, 28, 6, 2, 10, 4, 4, 10, 12, 18, 10, 10, 3, 12, 4, 12, 6, 10, 10, 18, 10, 12 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	FORMULA	`a(n)=nextprime[A025475(n)]-A025475(n)=A013632[A025475(n)]`
	EXAMPLE	`78125=5^7 is followed by 78137, the difference is 12; a(n)=1 only for some powers of 2.`
	CROSSREFS	`Cf. A025475, A000961, A001597, A001694, A007917, A007918, A013632, A013633, A049711.` `Sequence in context: A082727 A112603 A097294 * A006020 A190704 A190698` `Adjacent sequences: A060845 A060846 A060847 * A060849 A060850 A060851`
	KEYWORD	`nonn`
	AUTHOR	`Labos E. (labos(AT)ana.sote.hu), May 03 2001`

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Last modified February 15 03:33 EST 2012. Contains 205694 sequences.